/* Modern Dark Theme Design System for Live Radio Platform */
:root {
  --bg-dark: #0f172a;
  --bg-sidebar: #1e293b;
  --bg-card: #1e293b;
  --bg-surface: #334155;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border-color: #334155;

  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
  --transition: all 0.25s ease-in-out;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  overflow-x: hidden;
}

/* Sidebar Layout */
.app-container {
  display: flex;
  width: 100vw;
  min-height: 100vh;
}

.sidebar {
  width: 260px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1rem;
  transition: var(--transition);
}

.sidebar-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
}

.sidebar-header i {
  font-size: 1.8rem;
  color: var(--primary);
}

.sidebar-header h2 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: var(--transition);
}

.nav-item:hover, .nav-item.active {
  background-color: rgba(99, 102, 241, 0.15);
  color: var(--primary);
}

.nav-item i {
  font-size: 1.1rem;
  width: 20px;
  text-align: center;
}

.sidebar-footer {
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.btn-logout {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem;
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-md);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-logout:hover {
  background: var(--danger);
  color: #fff;
}

/* Main Content Area */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-dark);
  overflow-y: auto;
}

.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 2rem;
  background-color: var(--bg-sidebar);
  border-bottom: 1px solid var(--border-color);
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-surface);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.content-body {
  padding: 2rem;
}

/* Overview Stat Cards */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.metric-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
}

.metric-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
}

.metric-info p {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
}

.metric-info h3 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-top: 0.25rem;
}

.metric-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.metric-icon.indigo { background: rgba(99, 102, 241, 0.2); color: var(--primary); }
.metric-icon.emerald { background: rgba(16, 185, 129, 0.2); color: var(--success); }
.metric-icon.amber { background: rgba(245, 158, 11, 0.2); color: var(--warning); }
.metric-icon.rose { background: rgba(239, 68, 68, 0.2); color: var(--danger); }
.metric-icon.blue { background: rgba(59, 130, 246, 0.2); color: var(--info); }

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-running { background: rgba(16, 185, 129, 0.2); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.4); }
.badge-stopped { background: rgba(148, 163, 184, 0.2); color: #cbd5e1; border: 1px solid rgba(148, 163, 184, 0.4); }
.badge-starting, .badge-restarting { background: rgba(245, 158, 11, 0.2); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.4); }
.badge-error { background: rgba(239, 68, 68, 0.2); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.4); }
.badge-disabled { background: rgba(100, 116, 139, 0.2); color: #94a3b8; border: 1px solid rgba(100, 116, 139, 0.4); }

/* Tables */
.card-table {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.table-header {
  padding: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
}

.table-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th {
  background-color: var(--bg-surface);
  color: var(--text-muted);
  padding: 0.85rem 1.25rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.9rem;
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background-color: rgba(255, 255, 255, 0.02);
}

/* Action Buttons */
.action-btn-group {
  display: flex;
  gap: 0.4rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary { background-color: var(--primary); color: #fff; }
.btn-primary:hover { background-color: var(--primary-hover); }
.btn-success { background-color: var(--success); color: #fff; }
.btn-success:hover { background-color: #059669; }
.btn-warning { background-color: var(--warning); color: #000; }
.btn-warning:hover { background-color: #d97706; }
.btn-danger { background-color: var(--danger); color: #fff; }
.btn-danger:hover { background-color: #dc2626; }
.btn-secondary { background-color: var(--bg-surface); color: var(--text-main); }
.btn-secondary:hover { background-color: #475569; }
.btn-sm { padding: 0.35rem 0.6rem; font-size: 0.78rem; }

/* Forms */
.form-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  max-width: 700px;
  margin: 0 auto;
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.25);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal-box {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 450px;
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
  transform: translateY(-20px);
  transition: var(--transition);
}

.modal-overlay.active .modal-box {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* Toast Notifications */
#toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 2000;
}

.toast {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  color: #fff;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  min-width: 260px;
  animation: slideIn 0.3s ease-out forwards;
}

.toast-success { background-color: var(--success); }
.toast-error { background-color: var(--danger); }
.toast-warning { background-color: var(--warning); color: #000; }
.toast-info { background-color: var(--info); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Upload Zone */
.upload-zone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem 1.5rem;
  text-align: center;
  background-color: rgba(30, 41, 59, 0.5);
  cursor: pointer;
  transition: var(--transition);
}

.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--primary);
  background-color: rgba(99, 102, 241, 0.1);
}

.upload-zone i {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 0.75rem;
}

/* Responsive */
@media (max-width: 768px) {
  .app-container { flex-direction: column; }
  .sidebar { width: 100%; border-right: none; border-bottom: 1px solid var(--border-color); }
  .metrics-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}